Rotary pump



0. C. SELLE ROTARY PUMP s e t. 27', 1938.

Filed April 15, 1936 1NVENTOR. 0770 C. S/EZLE m TTORNEY.

Patented Sept. 21, 1938 2,131,302

2,131,302 ROTARYPUMP Otto G. Selle, Denver, 0010. Application April 1 3, 1936, Serial No. 74,083 2 Claims (01. 103-89) My invention relates to rotary pumps, and it outwardly therefrom and having interior threads is a primary object of the invention to provide as indicated .at I3 for connection with a pipe or a mechanism in which a given volume of disconduit (not shown).

UNITED STATES PATENT OFFICE placed fluid will be moved from an inlet and When the cover 8 is in place on housing 4, the 5 expelled through an outlet in one complete revooutlet-and-inlet openings are in vertical aline- 5 lution of the fluid. ment.

Another object of the invention is the provision A shaft l4 extends through cover 8 and carries of machined co-acting housing and runner surat its end within the chamber 4a of housing 4, faces to provide a substantially fluid-tight zone a rotor or pump-runner 15. A suitable stuffing 10 whose only entrance is the'inlet of the housing box I6 may be provided to prevent leakage around 10 and whose only outlet is the housing outlet. shaft l4. I

A further object of the invention resides in The runner I5 comprises a hub l5a provided the provision of a rotary pump which is simple, with a reduced extension I5b which holds the durable and efficient. end of the shaft l4 and extends into bearing 6,

Still another object of the invention is the proand a plurality of radially ranging diagonally 1 vision of means cooperating with the pump runslanting vanes I50 are carried on the hub for ner to accelerate the movement of material beacting on fluent material in the pump. tween the inlet andthe runner. .A set screw "5a or othersuitable means may A still further object, of the invention is to be provided for holding the runner against relaprovide a sealed passage for fluid between the tive movement-on shaft l4 within the housing 4. 20

inlet and the outletin order to prevent any ap- The bearing. 6 defines an annular passage l'l preciable movement of fluid, other than a progresfor material admitted through the inlet 5, d sive movement from inlet .to outlet. a wall or partition l8 extends across the passage Other objects reside in novel details of conat an inclination from oneside 'of inlet 5 and struction and in novel combinations and arran'geover thesame to the plane of the upper end of 25 ments of parts as will more fully appear in the bearing 6, at the bottom of the rotor-chamber 4a. course of the following description. The partition thus acts as a hood for the inlet To promote a better understanding ofthe in- 5 to prevent return of material thereto, as well vention, reference will now be made to the acas directing displaced fluid through the passage companying drawing in the several views of which H. The fluent matter upon reaching the inclined 30 like parts have been similarly designated, and in surface of partition I8 in its circulatory course, which: is thrust laterally by contact therewith, into the Figure 1 represents a side elevation, partially sphere of influence of the runner l5 within the in section, of apparatus embodying the present chamber 4a. invention, The shaft I4 is driven by any suitable means 35 Figure 2 is a side elevation shown partially in and in Figure 1 is illustrated as carrying a pulley section in the approximate position of the line l9 driven by a belt 20 attached to a suitable 2-2, Figure 1, and driving element (not shown).

Figure 3 is a section taken along the line 33, Intermediate the pulley l9 and the pump hous- 4) Figure 1. ing 4, the shaft I4 is encased in a housing 2| 40 In the drawing, the pump has been illustrated provided at both ends with suitable bearings 22 as comprising a housing 4, preferably of cylinfor the shaft, and containing a lubricant chamdrical shape, having an inlet 5in its bottom. A ber. Suitable lubricant is periodically introduced cylindrical bearing, 6 extends upwardly from the into this chamber through one or more valves 23.

15 bottom of housing 4 and terminates at the bot- Packing glands 34 may be provided as needed to tom of a chamber 4a in the upper portion of the prevent escape of the lubricant along shaft I4. housing, in which the pump-rotor operates. The bearings 22 are contained in screw-caps He The housing 4 is flanged as indicated at I, and at opposite ends of the housing 2| and the lowera cover plate 8 is fitted on the flanged end I of most cap is formed integral with the cover plate 5 the housing and held against relative movement 8 by means of legs 2|a. 5 thereon by suitable fastening means, such as The operation of the above described pump screws 9, while a gasket II] is held between houscontemplates movement of a given quantity of ing 4 and cover 8 to prevent leakage. fluid inducted through inlet 5, completely through The outlet of the pump is provided in cover passage I1 and into outlet [2 in one, complete plate 8 in alinement with a nipple [2 extending revolution. I

To this end, the upper end of bearing 6 and the adjoining surface 18a of partition l8 are machined to provide an even surface over which the vanes I and the hub I5a rotate. The lower edges l5d of the vanes and the hub are likewise machined and thereby disposed in fluid-tight contact with the end-surfaces of the relatively stationary bearing 6 and partition I8.

The inner surface of cover plate 8 is recessed as shown at 24, and on the side of outlet I2 forward with respect to the direction of rotation, the plate 8 has a downward projection 25 extending across the top of the annular chamber 42. The surface of the projection 25 is also machined and the upper edges l5c of vanes l5 are likewise machined to contact with the projection in fluid-tight relation thereto.

It will be readily understood that the housing 4 may be provided with legs or other supporting elements if it is to be used for vertical pumping, and placed in a sump or other fluid containing chamber. It is also evident that a suitable conduit may lead from the inlet into a supply of the fluid to be pumped.

ing fluids, the passage ll progressively narrows from inlet 5 to the top of partition l8. Inoperation, rotation of runner I 5 draws fluent matter through inlet 5 into passage I! by suction, and the narrowing volume of the passage causes a progressive increase in velocity.. ixWhen the displaced fluid strikes the. partition l8 it is thrust upwardly into the sphere ofinfluence of vanes I50 of the rotor within the chamber 4a.. A measured quantity is carried. forward by each vane due to the slicing action resultin from the passage-of such vane over the surface l8a of partition I8, and is elevated at the same time, due to the diagonally slanting shape. of the vane. -At the same instant the fluid is elevated, the upper edge of the blade next forward with relation to the direction of rotation contacts the machined surface of projection 25' and as none of the elevated fluid is free to escape in a forward. direction, it, consequently, passes directly into outletv I2.

Another-benefit derived'from the sealed zone 0 rotation of runner I5, is the increase in suction derived. As practically no fluid can reach the runner other than by traveling through passage In order to accelerate the movement of enter- 7 jected in substantially one-quarter revolution of runner l5.

From the foregoing, it is apparent that the mechanism is simple and durable and will effect an eificient pumping with a relatively low power consumption.

In order to maintain a fluid-tight contact between'the upper and lower surfaces of the runner, and the machined faces of the bearing 6, the partition 18a and the projection 25, the thickness of the gasket l0 may be varied and/or the position of the runner on the shaft may be adjusted by loosening the set screw Ilia.

Changes and modifications may be availed of within the spirit and scope of the invention as defined in the hereunto appended claims.

What 1 claim and desire to secure by Letters Patent is: v

1. A rotary pump comprising a cylindrical housing having an axial inlet at one end and an axial outlet at. its opposite. end, a vaned propeller fitted into the housing adjacent the outlet, an annular inlet chamber in the housing between the inlet and the propeller, and a radial partitionextending helically across saidinlet chamber from the inlet end'thereof to the propeller and being inclined in a direction opposite to the inclination of the propeller vanes, said partition beginning. in the inlet end of the housing at one side of the inletand extending across the inlet to its end adjacent the propeller.

2. A rotary pump comprising a cylindrical housing having an inlet and an outlet in axial alinement, avaned propeller positioned in the housing adjacent the outlet, an annular inlet chamber in the housing between the inlet port and the propeller and axially open to the propeller, and a helical partition in the chamber preventing direct axial flow between the inlet and the outlet and inclined in the direction of rotation of the propeller.

- O'I'IO C. SELLE. 

